Cartilaginous Fish

Cartilaginous Fish

Read and watch the videos to answer the questions. This is a graded assignment.

Multiple Choice

Which in not any example of a cartilaginous fish?

• skates

• rays

• dolphins

• sharks

Multiple Choice

What is the flexible connective tissue composed of cells and protein?

• cartilage

• spiracles

• rays

• rigid fins

Multiple Choice

What are considered the first jawed fish?

• jelly fish

• lancletes

• cartilaginous fish

• bony fish

Multiple Choice

What are the tiny teeth that are embedded in the skin that point backwards

• cartilage

• spiracles

• placoid scales

• rigid fins

Multiple Choice

What are the breathing holes located on their dorsal side behind each side of the eyes?

• cartilage

• spiracles

• placoid scales

• rigid fins

Multiple Choice

How long have sharks been evolving on our planet?

• 100 million years

• 500 million years

• 300 million years

• 800 million years

Multiple Choice

What was the largest shark that ever lived?

• Blue whale.

• Megalodon

• Tiger shark

• Beluga whale

Multiple Choice

From the video: What was responsible for Megalodon’s massive size?

• was linked to the size of its offspring

• was linked to the size of its ancestors

• was linked to the size of its teeth

• was linked to the size of its prey.

Multiple Choice

Why did Megalodon go extinct?

• Its food started to disappear, and has competition with Great White Sharks

• It couldn't handle the colder waters of its prey

• It became infertile due to changing oxygen levels

• it had a larger predator.

Multiple Choice

Which in not an example of a shark?

• Goblin

• Mako

• Piper

• Greenland

Multiple Choice

How much does the liver account for in a shark’s body?

• 1/3 of its body weight

• 2/3 of its body weight

• sharks do not have a liver

• none of the above

Multiple Choice

What allows for a shark to pick up sound vibrations over great distances.

• spiracle holes

• dorsal fin

• lateral line organs

• acute sense of smell

Multiple Choice

What part of the male shark is used to deliver sperm to the female shark’s reproductive tract?

• lateral line organs

• caudal fin

• spircales

• claspers

Multiple Choice

From the video: What happens to unborn sharks in the womb of a sand tiger shark?

• They eat their siblings.

• They stay close to conserve heat.

• They develop human like characteristics.

• They attempt Amullae of Lorenzini